"So one morning, the 79th refused to do duty and demanded an adjustment of its grievances. McClellan rounded up a battalion of regular infantry, plus a squadron of regular cavalry and a battery of regular artillery- hard boiled Indian fighters from the plains, filled with a stong disdain for volunteer soldiers- and lined them up facing the 79th, firearms loaded and ready for use; whereupon the 79th was invited to stop being mutinous and return to duty...."

-Catton, Mr Lincoln's Army, 65-66 (Doubleday 1962)

"On August 14th, 1861... my older brother...burst into the house...saying "They're having a bad time with the Highlanders and two companies of regulars and a battery loaded with grape and canister are ordered out there.
* * *
"If ther artillerymen are odered to fire, they will fire and so will the infantry. Ther are regulars, you know."
* * *
I knew, and as we jurried along I pictured those tall, proud Highlanders in their tartans, kilts and sporrans and bare knees, and remember the splendid apperarance they made in the "On to Richmond" advance of the month before, the bagpipes sounding a weird pibroch. As I remember, the camp of the Highlanders was not far from Kalorama, a beautiful place in the suburbs of Washington, afterwards taken by the government for a smallpox Hospital.

We arrived just as two companies of regulars took up position on two sides of a square, the two barracks being the third side, while on the fourth, in an open space, the rebellious soldiers were gathered, silent and sullen, their arms thrown in disordederly heaps upon the ground. Two companies of the Highlanders which did not join the mutiny were drawn up a little to the side at parade rest. They had the fine regimental colors with them.
* * *
We were standing a little distance back of the line of regulars near a group of officers, the Colenel of the Highlanders and his staff. A mounted adjutant rode into the middle of the square. He took out his watch, and holding it in his hand said "You have five minutes, men, to take up your arms and fall in. If you are not in line at the expiration of five minutes, the order will be given to fire"."

-Botkin, surpa at 46

"The New Yorkers blinked at the ominous array in front of them. These regulars, clearly, were prefectly willing to shoot volunteers if ordered, and the officer in charge had a frosty gling in his eye.

...So the 79th returened to duty and nobody was shot....."

Catton Mr. Lincoln's Army Surpa.